Figure 4

Effects of intermittent ethanol and MDMA administration during adolescence on number of errors on each trail in the Hebb-Williams maze (4a for the easy and 4b for the difficult mazes). The mazes were classified as easy (1, 3 and 4) or difficult (5 and 8). Mice were treated with Saline (Sal), 10 or 20 mg/kg of MDMA (M10 and M20), 1.25 g/kg of ethanol (E1.25), or 1.25 g/kg of ethanol + 10 or 20 mg/kg of MDMA (E1.25 + M10 and E1.25 + M20). Data are presented as mean values ± S.E.M. Differences with respect to first, second, third and fourth trials * p < 0.001.